Package com.itextpdf.pdfua.checkers

Class PdfUA2Checker

  • All Implemented Interfaces:
    IValidationChecker
    public class PdfUA2Checker
extends PdfUAChecker
    The class defines the requirements of the PDF/UA-2 standard and contains method implementations from the abstract PdfUAChecker class.

    The specification implemented by this class is ISO 14289-2.

    • Constructor Detail

      • PdfUA2Checker

        public PdfUA2Checker​(PdfDocument pdfDocument)
        Creates PdfUA2Checker instance with PDF document which will be validated against PDF/UA-2 standard.
        Parameters:
        pdfDocument - the document to validate

    • Method Detail

      • isPdfObjectReadyToFlush

        public boolean isPdfObjectReadyToFlush​(PdfObject object)
        Description copied from interface: IValidationChecker
        Is PdfObject ready to flush.
        Parameters:
        object - the pdf object to check
        Returns:
        true if the object is ready to flush, false otherwise

      • checkMetadata

        protected void checkMetadata​(PdfCatalog catalog)
        Checks that the Catalog dictionary of a conforming file contains the Metadata key whose value is a metadata stream as defined in ISO 32000-2:2020. Also checks that the value of pdfuaid:part is 2 for conforming PDF files and validates required pdfuaid:rev value.

        Checks that the Metadata stream as specified in ISO 32000-2:2020, 14.3 in the document catalog dictionary includes a dc: title entry reflecting the title of the document.

        Parameters:
        catalog - PdfCatalog document catalog dictionary

      • checkNonSymbolicCmapSubtable

        void checkNonSymbolicCmapSubtable​(TrueTypeFont fontProgram)
        For all non-symbolic TrueType fonts used for rendering, the embedded TrueType font program shall contain at least the Microsoft Unicode (3, 1 – Platform ID = 3, Encoding ID = 1), or the Macintosh Roman (1, 0 – Platform ID = 1, Encoding ID = 0) “cmap” subtable.
        Specified by:
        checkNonSymbolicCmapSubtable in class PdfUAChecker
        Parameters:
        fontProgram - the embedded TrueType font program to check

      • checkSymbolicCmapSubtable

        void checkSymbolicCmapSubtable​(TrueTypeFont fontProgram)
        Checks cmap entries present in the embedded TrueType font program of the symbolic TrueType font.

        The “cmap” subtable in the embedded font program shall either contain the Microsoft Symbol (3, 0 – Platform ID = 3, Encoding ID = 0) or the Mac Roman (1, 0 – Platform ID = 1, Encoding ID = 1) encoding.

        Specified by:
        checkSymbolicCmapSubtable in class PdfUAChecker
        Parameters:
        fontProgram - the embedded TrueType font program to check

      • checkPdfObject

        private void checkPdfObject​(PdfObject obj)

      • checkArrayRecursively

        private void checkArrayRecursively​(PdfArray array)

      • checkDictionaryRecursively

        private void checkDictionaryRecursively​(PdfDictionary dictionary)

      • checkCatalog

        private void checkCatalog​(PdfCatalog catalog)
        Validates document catalog dictionary against PDF/UA-2 standard.
        Parameters:
        catalog - PdfCatalog document catalog dictionary to check

      • checkFormFieldsAndAnnotations

        private void checkFormFieldsAndAnnotations​(PdfCatalog catalog)
        Validates all annotations and form fields present in the document against PDF/UA-2 standard.
        Parameters:
        catalog - PdfCatalog to check form fields present in the acroform

      • checkStructureTreeRoot

        private void checkStructureTreeRoot​(PdfStructTreeRoot structTreeRoot)
        Validates structure tree root dictionary against PDF/UA-2 standard.

        Additionally, checks that within a given explicitly provided namespace, structure types are not role mapped to other structure types in the same namespace. In the StructTreeRoot RoleMap there is no explicitly provided namespace, that's why it is not checked.

        Parameters:
        structTreeRoot - PdfStructTreeRoot structure tree root dictionary to check